cljs.util
(ext x)
Given a file, url or string return the file extension.
(get-name x)
Given a file or url return the last component of the path.
(mkdirs f)
Create all parent directories for the passed file.
(ns->source ns)
Given a namespace as a symbol return the corresponding resource if it exists.
(relative-name x)
Given a file return a path relative to the working directory. Given a
URL return the JAR relative path of the resource.
(unknown-opts passed knowns)
Takes a set of passed opt keys and known opt keys and for each
unknown opt key returns a vector of the key and its (potentially
nil) suggestion.